When I am doing onsite computer support, after I finish resolving whatever issue that I was called to resolve, and if I am allowed the time, I install Malwarebytes Anti-Malware on that computer, and I then run a quick scan, to make sure that computer doesn’t have any malware infections on it. Most computer infections today are malware, and Malwarebytes Anti-Malware does a great job of removing these infections, and it does it for free. They do have a paid version, which stays running in the background, which helps prevent any future infections from getting on the computer in the first place. The free version is good to keep installed on your computer, but you need to keep it updated and run a quick scan regularly, to help keep your computer clean of any malware.
If you already have Malwarebytes Anti-Malware installed on your computer, and if your computer ever gets infected by malware, you can run Malwarebytes Anti-Malware to help get rid of that malware. Even if Malwarebytes Anti-Malware won’t run, because the malware has prevented Malwarebytes Anti-Malware from running, Malwarebytes Anti-Malware has their Chameleon product installed in the “Chameleon” folder on your hard drive, which when launched, can usually update Malwarebytes Anti-Malware, and then complete a malware quick scan, to get rid of the malware on your computer. I use Malwarebytes Anti-Malware and their Chameleon software to get rid of malware on lots of computers that I work on. Malwarebytes Anti-Malware also includes a file deletion tool called “FileASSASSIN”, that is located in the Malwarebytes Anti-Malware “More Tools” tab, which can delete those stubborn files that are normally unable to be deleted.
You can always download the latest version of Malwarebytes Anti-Malware from filehippo.com at: https://www.filehippo.com/download_malwarebytes_anti_malware/